ART. 309 Self locking nuts

Material - steel

NN = 04 Blue zinc – 06 Yellow zinc

Code M H
37.06.04.NN M4 6
37.06.05.NN M5 6,3
37.06.06.NN M6 8
37.06.08.NN M8 9,5
37.06.10.NN M10 11,5
37.06.12.NN M12 14

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